any indication from your law enforcement sources that they have any suspicions at this point? >> what i hear at this point in time is they can't rule anything out. it's way too early in the game. they have to look at this device, they have to look at how it is built, they have to look at how devices over in the middle east were built and have been utilized. and pressure cooker bombs have been used in the middle east,@% especially pakistan. they know that. but they also, as i said, it's a very common bomb, if you will. so they have to look at everything. as one person said to me, what was the message of the bomber? what were they trying to say? it's very hard to rule out for anybody at this point in time, the date. it was tax day, it was four or five days before the anniversary of waco. it was patriots day in boston and this was a celebration that was honoring the newtown victims. there's a lot of american, if you will, symbolism around all the elements of the bombing that all the investigators are looking at right now. they start with the forensics, they start with the compone